iertutil.dll error.

spunk said:

On another computer with internet access download iertutil.dll file. Unzip the folder and
save it to a USB Flash Drive. On the troubled computer, Start the computer in Safe Mode. Put the flash drive in. At the blank desktop, press CTRL+ALT+DEL and start the Task Manager/File/New Task (Run) Browse to the Flash drive and copy the iertutil.dll. then browse to C:\Windows\system32 and Paste the iertutil.dll file into it. Confirm if it asks you to overwrite a file. Now Restart the computer.

Worth a try, the in place upgrade didn't work, went through the motions, then undid the changes.

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spunk said:

On another computer with internet access download iertutil.dll file. Unzip the folder and
save it to a USB Flash Drive. On the troubled computer, Start the computer in Safe Mode. Put the flash drive in. At the blank desktop, press CTRL+ALT+DEL and start the Task Manager/File/New Task (Run) Browse to the Flash drive and copy the iertutil.dll. then browse to C:\Windows\system32 and Paste the iertutil.dll file into it. Confirm if it asks you to overwrite a file. Now Restart the computer.

Nope, booted to safe mode, started task manager as detailed, file, run new task that except msconfig was in the dropdown, so I entered explorer, browsed to the dll file on the flash drive, copied, browsed to system32, pasted, was asked to confirm overwrite, then it said, destination folder access denied, you need permission to write to the folder.
Did I miss something? Did I do it wrong?

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I went ahead and did a fresh windows install, thanks all for your help.